Suborder:
|
Goniatitina
|
Superfamily:
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Neoicoceratoidea
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Family:
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Metalegoceratidae
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Subfamily:
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Metalegoceratinae
|
Genus:
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Pseudoschistoceras
|
Species:
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gigas |
Qualifier:
|
ss |
Author:
|
Smith 1927,p.33
|
Lower Boundary:
|
Sakmarian--Artinskian [SAK--ART], 284.4 million years
|
Upper Boundary:
|
Kungurian/Leonardian--Roadian [KUN--ROA], 270.6 million years
|